From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx110.postini.com [74.125.245.110]) by kanga.kvack.org (Postfix) with SMTP id 6DD536B13F0 for ; Wed, 1 Feb 2012 15:24:46 -0500 (EST) Received: by vbip1 with SMTP id p1so1681288vbi.14 for ; Wed, 01 Feb 2012 12:24:45 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20120201095556.812db19c.kamezawa.hiroyu@jp.fujitsu.com> References: <20120201095556.812db19c.kamezawa.hiroyu@jp.fujitsu.com> From: Greg Thelen Date: Wed, 1 Feb 2012 12:24:25 -0800 Message-ID: Subject: Re: [LSF/MM TOPIC] memcg topics. Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: KAMEZAWA Hiroyuki Cc: lsf-pc@lists.linux-foundation.org, linux-mm@kvack.org, "hannes@cmpxchg.org" , Michal Hocko , "bsingharora@gmail.com" , Hugh Dickins , Ying Han , Mel Gorman , Wu Fengguang On Tue, Jan 31, 2012 at 4:55 PM, KAMEZAWA Hiroyuki wrote: > 4. dirty ratio > =A0 In the last year, patches were posted but not merged. I'd like to hea= r > =A0 works on this area. I would like to attend to discuss this topic. I have not had much time to = work on this recently, but should be able to focus more on this soon. The IO less writeback changes require some redesign and may allow for a simpler implementation of mem_cgroup_balance_dirty_pages(). Maintaining a per container dirty page counts, ratios, and limits is fairly easy, but integration with writeback is the challenge. My big questions are for writeback people: 1. how to compute per-container pause based on bdi bandwidth, cgroup dirty page usage. 2. how to ensure that writeback will engage even if system and bdi are below respective background dirty ratios, yet a memcg is above its bg dirty limit. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org